/* ══════════════════════════════════════════════════════════════
   LETU — 垒土科技 · site styles
   Dark industrial / precision-instrument system
   ══════════════════════════════════════════════════════════════ */

/* ── tokens ─────────────────────────────────────────────────── */
:root{
  --void:#05060a;
  --ink:#0a0c12;
  --panel:#0d1017;
  --line:rgba(234,230,221,.10);
  --line-soft:rgba(234,230,221,.055);
  --bone:#eae6dd;
  --mute:#8b8f98;
  --dim:#5b6069;
  --brass:#c9a464;
  --brass-hi:#f0d7a4;
  --signal:#6fe8c8;

  --max:1360px;
  --pad:clamp(20px,4vw,64px);
  --ease:cubic-bezier(.22,1,.36,1);
  --ease-io:cubic-bezier(.65,0,.35,1);

  --mono:'jetbrains-mono',ui-monospace,SFMono-Regular,monospace;
  --sans:'space-grotesk',-apple-system,'Segoe UI',Roboto,sans-serif;
  --zh:'Microsoft YaHei','PingFang SC','Noto Sans SC',sans-serif;
}

/* ── reset ──────────────────────────────────────────────────── */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:96px}
html.lenis,html.lenis body{height:auto}
body{
  margin:0;background:var(--void);color:var(--bone);
  font-family:var(--sans);font-size:16px;line-height:1.62;font-weight:400;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p,figure,blockquote{margin:0}
::selection{background:var(--brass);color:#0a0a0a}
:focus-visible{outline:1px solid var(--brass);outline-offset:4px}

.skip{position:fixed;left:16px;top:-100px;z-index:999;background:var(--brass);color:#0a0a0a;padding:10px 18px;border-radius:2px;font-size:13px;transition:top .3s}
.skip:focus{top:16px}

.mono{font-family:var(--mono);font-size:11px;letter-spacing:.18em;text-transform:uppercase;font-weight:400}
.label{display:inline-flex;align-items:center;gap:10px;font-family:var(--mono);font-size:11px;letter-spacing:.2em;text-transform:uppercase;color:var(--mute)}
.label::before{content:'';width:22px;height:1px;background:var(--brass);display:block}

.wrap{max-width:var(--max);margin:0 auto;padding:0 var(--pad);width:100%}
.sec{padding:clamp(80px,11vw,170px) 0;position:relative}

/* ── boot ───────────────────────────────────────────────────── */
.boot{
  position:fixed;inset:0;z-index:120;background:var(--void);
  display:grid;place-items:center;
  transition:opacity .7s var(--ease),visibility .7s;
}
.boot.is-done{opacity:0;visibility:hidden;pointer-events:none}
.boot__inner{width:min(420px,72vw);display:flex;flex-direction:column;gap:22px}
.boot__mark{width:44px;color:var(--brass)}
.boot__mark svg{width:100%;height:auto;display:block}
.boot__meta{display:flex;justify-content:space-between;font-family:var(--mono);font-size:10px;letter-spacing:.22em;color:var(--dim)}
.boot__bar{height:1px;background:rgba(234,230,221,.14);position:relative;overflow:hidden}
.boot__bar i{position:absolute;inset:0;background:var(--brass);transform:scaleX(0);transform-origin:left;transition:transform .25s linear}
.boot__num{font-family:var(--mono);font-size:48px;letter-spacing:-.02em;color:var(--bone);font-weight:300;line-height:1}

/* ── grain / cursor / progress ──────────────────────────────── */
.grain{
  position:fixed;inset:0;z-index:90;pointer-events:none;opacity:.035;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='3'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  mix-blend-mode:overlay;
}
.progress{position:fixed;right:0;top:0;width:2px;height:100%;z-index:80;background:rgba(234,230,221,.06)}
.progress i{display:block;width:100%;height:100%;background:linear-gradient(180deg,var(--brass),var(--brass-hi));transform:scaleY(0);transform-origin:top}

.cursor{position:fixed;left:0;top:0;z-index:110;pointer-events:none;mix-blend-mode:difference;opacity:0;transition:opacity .4s}
.cursor.is-on{opacity:1}
.cursor__dot,.cursor__ring{position:absolute;left:0;top:0;border-radius:50%;transform:translate(-50%,-50%)}
.cursor__dot{width:5px;height:5px;background:#fff}
.cursor__ring{width:34px;height:34px;border:1px solid rgba(255,255,255,.55);transition:width .35s var(--ease),height .35s var(--ease),border-color .35s,background .35s}
.cursor.is-hover .cursor__ring{width:60px;height:60px;background:rgba(255,255,255,.08);border-color:transparent}
.cursor__label{
  position:absolute;left:0;top:0;transform:translate(-50%,-50%);
  font-family:var(--mono);font-size:9px;letter-spacing:.18em;color:#fff;
  opacity:0;transition:opacity .3s;
}
.cursor.is-hover .cursor__label{opacity:1}
@media (hover:none),(max-width:900px){.cursor{display:none}}

/* ── nav ────────────────────────────────────────────────────── */
.nav{
  position:fixed;left:0;top:0;width:100%;z-index:70;
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  padding:22px calc(var(--pad) + max(0px, (100vw - var(--max)) / 2));
  transition:padding .5s var(--ease),background .5s,border-color .5s,backdrop-filter .5s;
  border-bottom:1px solid transparent;
}
.nav.is-scrolled{
  padding:14px calc(var(--pad) + max(0px, (100vw - var(--max)) / 2));
  background:rgba(5,6,10,.72);
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  border-bottom-color:var(--line-soft);
}
.nav.is-hidden{transform:translateY(-100%)}
.nav__logo{display:flex;align-items:center;gap:12px;color:var(--bone)}
.nav__mark{width:26px;height:26px;color:var(--brass);flex:none}
.nav__type{display:flex;flex-direction:column;line-height:1;font-weight:600;font-size:17px;letter-spacing:.06em}
.nav__type em{font-style:normal;font-family:var(--zh);font-size:9px;letter-spacing:.3em;color:var(--mute);margin-top:5px;font-weight:400}
.nav__links{display:flex;gap:clamp(16px,2.4vw,36px)}
.nav__links a{
  position:relative;font-family:var(--mono);font-size:10.5px;letter-spacing:.18em;text-transform:uppercase;color:var(--mute);
  padding:6px 0;transition:color .3s;
}
.nav__links a::after{content:'';position:absolute;left:0;bottom:0;width:100%;height:1px;background:var(--brass);transform:scaleX(0);transform-origin:right;transition:transform .45s var(--ease)}
.nav__links a:hover,.nav__links a.is-active{color:var(--bone)}
.nav__links a:hover::after,.nav__links a.is-active::after{transform:scaleX(1);transform-origin:left}
@media (max-width:860px){.nav__links{display:none}}

/* ── buttons ────────────────────────────────────────────────── */
.btn{
  position:relative;display:inline-flex;align-items:center;justify-content:center;gap:14px;
  padding:16px 26px;border-radius:999px;border:1px solid var(--line);
  font-size:13px;letter-spacing:.03em;overflow:hidden;isolation:isolate;
  transition:color .45s var(--ease),border-color .45s,background .45s;
  white-space:nowrap;
}
.btn::before{
  content:'';position:absolute;inset:-1px;z-index:-1;background:var(--brass);
  transform:translateY(101%);transition:transform .55s var(--ease);
}
.btn:hover::before{transform:translateY(0)}
.btn:hover{color:#0a0a0a;border-color:var(--brass)}
.btn--solid{background:var(--brass);color:#08090c;border-color:var(--brass);font-weight:500}
.btn--solid::before{background:var(--brass-hi)}
.btn--solid:hover{color:#08090c}
.btn--ghost{color:var(--bone)}
.btn--sm{padding:11px 20px;font-size:12px}
.arr{width:7px;height:7px;border-top:1px solid currentColor;border-right:1px solid currentColor;transform:rotate(45deg);transition:transform .45s var(--ease);flex:none}
.btn:hover .arr,.link-arrow:hover .arr,.foot__top-link:hover .arr{transform:rotate(45deg) translate(3px,-3px)}

/* ── hero ───────────────────────────────────────────────────── */
.hero{
  position:relative;min-height:100svh;min-height:100vh;
  display:flex;flex-direction:column;justify-content:flex-end;
  padding-top:140px;overflow:hidden;
  background:radial-gradient(120% 80% at 50% 0%,#0b0e16 0%,var(--void) 62%);
}
.hero__canvas{position:absolute;inset:0;width:100%;height:100%;opacity:.85;
  mask-image:radial-gradient(75% 75% at 50% 45%,#000 35%,transparent 82%);
  -webkit-mask-image:radial-gradient(75% 75% at 50% 45%,#000 35%,transparent 82%);}
.hero__grid{
  position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(234,230,221,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(234,230,221,.05) 1px,transparent 1px);
  background-size:88px 88px;
  mask-image:radial-gradient(70% 60% at 50% 40%,#000 0%,transparent 75%);
  -webkit-mask-image:radial-gradient(70% 60% at 50% 40%,#000 0%,transparent 75%);
}
.hero__glow{position:absolute;left:50%;top:34%;width:min(1000px,110vw);aspect-ratio:1;transform:translate(-50%,-50%);
  background:radial-gradient(circle,rgba(201,164,100,.13),transparent 62%);filter:blur(30px);pointer-events:none}
.hero__inner{position:relative;z-index:3;width:100%;max-width:var(--max);margin:0 auto;padding:0 var(--pad) clamp(90px,12vh,130px)}
.hero__eyebrow{display:flex;align-items:center;gap:10px;color:var(--mute);margin-bottom:clamp(20px,3vw,34px)}
.dot{width:5px;height:5px;border-radius:50%;background:var(--brass);box-shadow:0 0 0 0 rgba(201,164,100,.6);animation:pulse 2.6s infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(201,164,100,.55)}70%{box-shadow:0 0 0 12px rgba(201,164,100,0)}100%{box-shadow:0 0 0 0 rgba(201,164,100,0)}}
.hero__title{
  font-size:clamp(2.4rem,7vw,7rem);line-height:.92;letter-spacing:-.035em;font-weight:500;
  margin:0 0 clamp(28px,4vw,52px);
}
.hero__title-accent{
  background:linear-gradient(92deg,var(--brass) 0%,var(--brass-hi) 42%,#fff6e3 62%,var(--brass) 92%);
  background-size:220% 100%;
  -webkit-background-clip:text;background-clip:text;color:transparent;
  animation:sheen 9s linear infinite;
}
@keyframes sheen{0%{background-position:0% 50%}100%{background-position:220% 50%}}

.hero__foot{display:flex;align-items:flex-end;justify-content:space-between;gap:clamp(24px,5vw,80px);flex-wrap:wrap}
.hero__lede{max-width:44ch;color:var(--mute);font-size:clamp(15px,1.25vw,17px);line-height:1.62}
.hero__actions{display:flex;gap:12px;flex-wrap:wrap}

.hero__hud{
  position:relative;z-index:3;display:flex;justify-content:space-between;align-items:center;gap:16px;
  border-top:1px solid var(--line-soft);
  padding:16px calc(var(--pad) + max(0px, (100vw - var(--max)) / 2));
  color:var(--dim);font-size:10px;letter-spacing:.2em;
}
.hero__hud .hud__item{display:inline-flex;align-items:center;gap:8px}
.hud__item--mid{color:var(--mute)}
.pulse{width:5px;height:5px;border-radius:50%;background:var(--signal);display:inline-block;animation:pulse 2s infinite}
.arrow-down{width:6px;height:6px;border-bottom:1px solid currentColor;border-right:1px solid currentColor;transform:rotate(45deg);animation:bob 2.2s var(--ease) infinite}
@keyframes bob{0%,100%{transform:rotate(45deg) translate(0,0)}50%{transform:rotate(45deg) translate(3px,3px)}}
@media (max-width:760px){
  .hero__title{font-size:clamp(1.72rem,8vw,2.6rem);letter-spacing:-.03em}
  .hero__foot{flex-direction:column;align-items:stretch;gap:26px}
  .hero__actions{width:100%}
  .hero__actions .btn{flex:1 1 0;padding:14px 16px;font-size:12px}
  .hero__inner{padding-bottom:70px}
  .hero__hud .hud__item:first-child{display:none}
  .hero__hud{justify-content:space-between;font-size:9px}
}

/* split text */
.word{display:inline-block;overflow:hidden;vertical-align:bottom;padding-bottom:.1em;margin-bottom:-.1em}
.char{display:inline-block;transform:translateY(115%) rotate(3deg);opacity:0;
  transition:transform 1s var(--ease),opacity .75s var(--ease)}
.char.is-in{transform:none;opacity:1}
.char-block{display:inline-block;transform:translateY(40px);opacity:0;
  transition:transform 1.1s var(--ease),opacity .9s var(--ease)}
.char-block.is-in{transform:none;opacity:1}

/* hero technical drawing */
.hero__spec{
  position:absolute;z-index:2;top:clamp(96px,13vh,140px);right:calc(var(--pad) + max(0px, (100vw - var(--max)) / 2));
  width:clamp(190px,16.5vw,250px);display:flex;flex-direction:column;gap:12px;
  opacity:0;transform:translateY(-10px);
  transition:opacity 1.6s var(--ease) .9s,transform 1.6s var(--ease) .9s;
}
body.is-ready .hero__spec{opacity:.85;transform:none}
.spec__frame{position:relative;overflow:hidden;border:1px solid var(--line-soft);
  background:linear-gradient(180deg,rgba(234,230,221,.025),rgba(234,230,221,0))}
.spec__frame svg{display:block;width:100%;height:auto;padding:10px}
.spec__part{clip-path:inset(0 100% 0 0)}
body.is-ready .spec__part{clip-path:inset(0 0 0 0);transition:clip-path 2.6s var(--ease) 1.1s}
.spec__scan{position:absolute;left:0;right:0;top:-2%;height:1px;
  background:linear-gradient(90deg,transparent,rgba(111,232,200,.65),transparent);
  animation:scan 6s var(--ease-io) infinite}
@keyframes scan{0%{top:-2%;opacity:0}8%{opacity:1}92%{opacity:1}100%{top:102%;opacity:0}}
.spec__meta{display:flex;flex-direction:column;gap:5px;color:var(--dim);font-size:8.5px;letter-spacing:.16em}
.spec__live{display:inline-flex;align-items:center;gap:6px;color:rgba(111,232,200,.8)}
@media (max-width:1200px),(max-height:790px){.hero__spec{display:none}}

/* ── marquee ────────────────────────────────────────────────── */
.marquee{border-top:1px solid var(--line-soft);border-bottom:1px solid var(--line-soft);overflow:hidden;padding:clamp(14px,2vw,22px) 0;background:var(--ink)}
.marquee__track{display:flex;align-items:center;gap:clamp(20px,3vw,44px);white-space:nowrap;will-change:transform}
.marquee__track span{
  font-size:clamp(1.1rem,2.3vw,2rem);letter-spacing:.02em;text-transform:uppercase;font-weight:500;
  color:transparent;-webkit-text-stroke:1px rgba(234,230,221,.32);
}
.marquee__track .sep{color:var(--brass);-webkit-text-stroke:0;font-size:clamp(.9rem,1.6vw,1.3rem)}

/* ── section heads ──────────────────────────────────────────── */
.sec__head{display:flex;flex-direction:column;gap:clamp(18px,2.4vw,30px);margin-bottom:clamp(48px,7vw,96px)}
.sec__head--row{flex-direction:row;justify-content:space-between;align-items:flex-end;gap:40px;flex-wrap:wrap}
.sec__title{font-size:clamp(2rem,4.6vw,4.2rem);line-height:1.02;letter-spacing:-.03em;font-weight:500;max-width:18ch}
.sec__note{max-width:30ch;color:var(--mute);font-size:14px;line-height:1.6;padding-bottom:10px}
.lede{font-size:clamp(16px,1.4vw,19px);line-height:1.55;color:#cfcabf;max-width:46ch}

/* ── 01 origin ──────────────────────────────────────────────── */
.origin{background:linear-gradient(180deg,var(--void),var(--ink) 60%,var(--void))}
.origin__grid{display:grid;grid-template-columns:1fr 1.15fr;gap:clamp(32px,6vw,96px);align-items:start}
.origin__quote blockquote{padding-left:clamp(18px,2vw,28px);border-left:1px solid var(--brass)}
.origin__cn{font-family:var(--zh);font-size:clamp(1.35rem,2.3vw,2.1rem);line-height:1.55;letter-spacing:.04em;color:var(--bone)}
.origin__en{margin-top:18px;color:var(--mute);font-size:clamp(13px,1.1vw,15px);line-height:1.7;font-style:italic}
.origin__quote figcaption{margin-top:26px;color:var(--dim);font-size:10px}
.origin__copy{display:flex;flex-direction:column;gap:22px}
.origin__copy p{color:var(--mute);max-width:52ch}
.origin__copy .lede{color:var(--bone)}

.values{display:grid;grid-template-columns:repeat(2,1fr);gap:1px;margin-top:12px;background:var(--line-soft)}
.values li{display:flex;align-items:center;gap:14px;padding:20px 18px;background:var(--void)}
.values b{font-family:var(--mono);font-size:10px;color:var(--brass);font-weight:400}
.values span{display:flex;flex-direction:column;font-family:var(--zh);font-size:15px;line-height:1.3}
.values em{font-family:var(--mono);font-style:normal;font-size:9.5px;letter-spacing:.18em;text-transform:uppercase;color:var(--dim);margin-top:4px}

.origin__stats{display:grid;grid-template-columns:repeat(4,1fr);gap:clamp(16px,3vw,40px);margin-top:clamp(56px,8vw,110px);padding-top:clamp(28px,4vw,44px);border-top:1px solid var(--line)}
.stat{display:flex;flex-direction:column;gap:10px}
.stat__num{font-size:clamp(2.2rem,4.2vw,3.6rem);line-height:1;font-weight:300;letter-spacing:-.04em;font-variant-numeric:tabular-nums}
.stat__label{color:var(--dim);font-size:9.5px}

.founder{display:grid;grid-template-columns:minmax(180px,300px) 1fr;gap:clamp(24px,4vw,64px);margin-top:clamp(56px,8vw,110px);align-items:center;border-top:1px solid var(--line);padding-top:clamp(32px,4vw,56px)}
.founder__media{position:relative;overflow:hidden;border-radius:2px}
.founder__media img{width:100%;aspect-ratio:4/5;object-fit:cover;object-position:center top;filter:grayscale(.35) contrast(1.02);transition:filter .8s var(--ease),transform 1.2s var(--ease)}
.founder__media:hover img{filter:none;transform:scale(1.03)}
.founder__media::after{content:'';position:absolute;inset:0;box-shadow:inset 0 0 0 1px var(--line);pointer-events:none}
.founder__body .mono{color:var(--brass);font-size:9.5px}
.founder__body h3{margin:14px 0 8px;font-size:clamp(1.4rem,2.2vw,2rem);font-weight:500;letter-spacing:-.01em}
.founder__body h3 span{color:var(--mute);font-weight:300;font-size:.72em;margin-left:10px}
.founder__role{color:var(--dim);font-size:13px}
.founder__time{margin-top:24px;display:flex;flex-direction:column}
.founder__time li{display:flex;gap:20px;padding:11px 0;border-top:1px solid var(--line-soft);font-size:13.5px;color:var(--mute)}
.founder__time span{font-family:var(--mono);font-size:10.5px;letter-spacing:.06em;color:var(--brass);min-width:88px;padding-top:2px}

/* ── 02 capabilities rail ───────────────────────────────────── */
.rail{position:relative;background:var(--ink);border-top:1px solid var(--line-soft);border-bottom:1px solid var(--line-soft)}
.rail__sticky{position:sticky;top:0;height:100svh;height:100vh;display:flex;flex-direction:column;overflow:hidden}
.rail__bar{display:flex;justify-content:space-between;align-items:center;padding:clamp(70px,9vh,100px) var(--pad) 0}
.rail__count{color:var(--mute);font-size:10.5px}
.rail__count b{color:var(--brass);font-weight:400}
.rail__viewport{flex:1;display:flex;align-items:center;overflow:hidden}
.rail__track{display:flex;height:min(72vh,660px);will-change:transform;padding-left:var(--pad)}
.cap{flex:0 0 auto;width:min(58vw,660px);display:flex;flex-direction:column;
  border-left:1px solid var(--line-soft);padding:0 clamp(18px,2.6vw,38px)}
.cap:last-child{border-right:1px solid var(--line-soft)}
.cap__media{flex:1 1 auto;min-height:180px;overflow:hidden;position:relative;background:#0b0d13}
.cap__media img{width:100%;height:100%;object-fit:cover;filter:grayscale(.55) contrast(1.05) brightness(.82);transition:filter 1s var(--ease),transform 1.4s var(--ease)}
.cap:hover .cap__media img{filter:none;transform:scale(1.04)}
.cap__media::after{content:'';position:absolute;inset:0;background:linear-gradient(180deg,transparent 55%,rgba(5,6,10,.75));pointer-events:none}
.cap__body{padding-top:22px;display:flex;flex-direction:column;gap:8px;flex:0 0 auto}
.cap__top{display:flex;justify-content:space-between;align-items:baseline;color:var(--dim)}
.cap__share{font-size:clamp(1.3rem,2vw,1.9rem);font-weight:300;color:var(--brass);letter-spacing:-.02em;font-variant-numeric:tabular-nums}
.cap__share i{font-style:normal;font-size:.5em;vertical-align:super;margin-left:2px}
.cap__title{font-size:clamp(1.3rem,2.1vw,1.9rem);font-weight:500;letter-spacing:-.02em;line-height:1.15;margin-top:4px}
.cap__zh{font-family:var(--zh);font-size:12px;color:var(--dim);letter-spacing:.06em}
.cap__text{color:var(--mute);font-size:13.5px;line-height:1.62;max-width:46ch;margin-top:6px}
.cap__tags{display:flex;gap:6px;margin-top:auto;padding-top:16px;flex-wrap:wrap}
.cap__tags li{font-family:var(--mono);font-size:9px;letter-spacing:.14em;text-transform:uppercase;color:var(--dim);border:1px solid var(--line);padding:5px 9px;border-radius:999px}
.rail__foot{display:flex;align-items:center;gap:20px;padding:0 var(--pad) clamp(26px,4vh,40px)}
.rail__prog{flex:1;height:1px;background:rgba(234,230,221,.12);position:relative;overflow:hidden}
.rail__prog i{position:absolute;inset:0;background:var(--brass);transform:scaleX(0);transform-origin:left}
.rail__hint{color:var(--dim);font-size:9px}

/* ── 03 products ────────────────────────────────────────────── */
.filters{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:clamp(28px,4vw,48px)}
.filter{
  font-family:var(--mono);font-size:10px;letter-spacing:.16em;text-transform:uppercase;color:var(--mute);
  padding:9px 16px;border:1px solid var(--line);border-radius:999px;transition:.35s var(--ease);
}
.filter:hover{color:var(--bone);border-color:rgba(234,230,221,.3)}
.filter.is-active{background:var(--bone);color:#08090c;border-color:var(--bone)}

.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line-soft);border-top:1px solid var(--line-soft)}
.card{position:relative;background:var(--void);padding:clamp(12px,1.2vw,18px);cursor:pointer;overflow:hidden;
  transition:opacity .5s var(--ease),transform .5s var(--ease),background .5s}
.card.is-hidden{display:none}
.card__media{position:relative;overflow:hidden;aspect-ratio:4/3;background:#0b0d13}
.card__media img{width:100%;height:100%;object-fit:cover;filter:saturate(.9) contrast(1.02);transition:transform 1.3s var(--ease),filter .8s}
.card__media::after{content:'';position:absolute;inset:0;z-index:1;pointer-events:none;
  background:linear-gradient(180deg,rgba(5,6,10,.30),rgba(5,6,10,0) 45%,rgba(5,6,10,.42));transition:opacity .6s}
.card:hover .card__media img{transform:scale(1.06);filter:saturate(1) contrast(1.02)}
.card:hover .card__media::after{opacity:.45}
.card__tag{position:absolute;z-index:2;left:12px;top:12px;color:var(--bone);background:rgba(5,6,10,.6);backdrop-filter:blur(6px);padding:5px 9px;border:1px solid rgba(234,230,221,.14);font-size:8.5px;letter-spacing:.18em}
.card__foot{display:flex;justify-content:space-between;align-items:baseline;gap:12px;padding:16px 4px 8px}
.card__foot h3{font-size:15px;font-weight:500;letter-spacing:-.01em}
.card__foot p{font-size:11.5px;color:var(--dim);text-align:right}
.card__glow{position:absolute;inset:0;opacity:0;pointer-events:none;transition:opacity .5s;
  background:radial-gradient(280px circle at var(--mx,50%) var(--my,50%),rgba(201,164,100,.13),transparent 62%)}
.card:hover .card__glow{opacity:1}

/* ── 04 markets ─────────────────────────────────────────────── */
.markets{background:linear-gradient(180deg,var(--void),#080a10 50%,var(--void))}
.markets__grid{display:grid;grid-template-columns:1fr 1.05fr;gap:clamp(32px,5vw,80px);align-items:center}
.markets__copy .sec__title{margin:20px 0 24px}
.markets__list{margin-top:clamp(28px,4vw,48px);border-top:1px solid var(--line)}
.markets__list li{display:flex;align-items:center;gap:16px;padding:13px 0;border-bottom:1px solid var(--line-soft);
  transition:padding-left .4s var(--ease),color .4s;cursor:default}
.markets__list li:hover{padding-left:8px;color:var(--brass)}
.mk__i{color:var(--dim);font-size:9.5px}
.mk__n{font-size:14px;letter-spacing:-.01em;flex:1}
.mk__r{color:var(--dim);font-size:9px}
.markets__globe{position:relative;aspect-ratio:1;width:100%;max-width:640px;justify-self:center}
#globeCanvas{width:100%;height:100%;display:block}
.globe__hud{position:absolute;left:0;right:0;bottom:-6px;display:flex;justify-content:space-between;color:var(--dim);font-size:9px}
.globe__live{display:inline-flex;align-items:center;gap:7px}

/* ── 05 process ─────────────────────────────────────────────── */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:clamp(16px,2.4vw,32px);counter-reset:s}
.step{position:relative;padding-top:26px;border-top:1px solid var(--line)}
.step::before{content:'';position:absolute;left:0;top:-1px;height:1px;width:0;background:var(--brass);transition:width .9s var(--ease)}
.step.is-in::before{width:100%}
.step__num{color:var(--brass);font-size:9.5px}
.step h3{margin:14px 0 10px;font-size:clamp(1rem,1.5vw,1.25rem);font-weight:500;letter-spacing:-.01em}
.step p{color:var(--mute);font-size:13px;line-height:1.62}
.process__note{display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap;
  margin-top:clamp(48px,6vw,90px);padding-top:24px;border-top:1px solid var(--line-soft);color:var(--dim);font-size:9.5px}
.link-arrow{display:inline-flex;align-items:center;gap:10px;font-size:13px;color:var(--bone);border-bottom:1px solid var(--line);padding-bottom:4px;transition:color .35s,border-color .35s}
.link-arrow:hover{color:var(--brass);border-color:var(--brass)}

/* ── 06 mission ─────────────────────────────────────────────── */
.mission{background:var(--ink);border-top:1px solid var(--line-soft);border-bottom:1px solid var(--line-soft)}
.equation{display:flex;align-items:center;gap:clamp(10px,1.6vw,24px);flex-wrap:wrap;margin:clamp(32px,5vw,60px) 0}
.eq__v,.eq__f{font-size:clamp(3rem,7vw,6.5rem);line-height:1;font-weight:300;letter-spacing:-.04em}
.eq__v{color:var(--bone)}
.eq__f{color:var(--brass)}
.eq__e{font-size:clamp(1.6rem,3vw,2.8rem);color:var(--dim);font-weight:300}
.eq__bracket{font-size:clamp(3rem,7vw,6.5rem);line-height:1;font-weight:300;color:var(--dim)}
.eq__terms{display:flex;gap:8px;flex-wrap:wrap;align-items:center}
.term{display:inline-flex;align-items:center;gap:8px;padding:10px 18px;border:1px solid var(--line);border-radius:999px;
  font-size:clamp(.85rem,1.2vw,1.05rem);transition:.45s var(--ease);cursor:default}
.term i{font-family:var(--mono);font-style:normal;font-size:8.5px;color:var(--dim);letter-spacing:.1em}
.term:hover{border-color:var(--brass);color:var(--brass);transform:translateY(-3px)}
.term:hover i{color:var(--brass)}
.mission__foot{display:flex;justify-content:space-between;align-items:flex-end;gap:32px;flex-wrap:wrap;margin-top:clamp(28px,4vw,48px)}
.mission__tag{color:var(--dim);font-size:9px;padding-bottom:6px}

/* ── 07 contact ─────────────────────────────────────────────── */
.contact__grid{display:grid;grid-template-columns:1.1fr 1fr;gap:clamp(36px,6vw,90px)}
.contact__left{display:flex;flex-direction:column;gap:clamp(28px,4vw,44px)}
.people{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--line-soft);border:1px solid var(--line-soft)}
.people li{background:var(--void);padding:18px;display:flex;flex-direction:column;gap:4px;transition:background .4s}
.people li:hover{background:var(--ink)}
.people__role{color:var(--brass);font-size:8.5px}
.people__name{font-size:14.5px;margin:4px 0 8px;letter-spacing:-.01em}
.people a{font-size:12px;color:var(--mute);transition:color .3s;width:fit-content}
.people a:hover{color:var(--bone)}
.address{color:var(--mute);font-size:13px;line-height:1.75;font-style:normal;padding-top:20px;border-top:1px solid var(--line-soft)}
.address .mono{display:block;color:var(--dim);font-size:9px;margin-bottom:10px}

.form{display:flex;flex-direction:column;gap:6px;background:var(--ink);border:1px solid var(--line-soft);padding:clamp(22px,2.6vw,36px)}
.form__row{display:grid;grid-template-columns:1fr 1fr;gap:6px}
.field{position:relative;display:block}
.field input,.field textarea{
  width:100%;background:transparent;border:0;border-bottom:1px solid var(--line);
  padding:24px 0 12px;color:var(--bone);font:inherit;font-size:14.5px;line-height:1.5;
  transition:border-color .4s;resize:vertical;
}
.field textarea{padding-bottom:8px}
.field input:focus,.field textarea:focus{outline:0;border-bottom-color:var(--brass)}
.field span{
  position:absolute;left:0;top:22px;color:var(--dim);font-size:14px;pointer-events:none;
  transition:transform .4s var(--ease),font-size .4s var(--ease),color .4s,letter-spacing .4s;
}
.field input:focus + span,.field textarea:focus + span,
.field input:not(:placeholder-shown) + span,.field textarea:not(:placeholder-shown) + span{
  transform:translateY(-20px);font-size:9px;letter-spacing:.16em;text-transform:uppercase;color:var(--brass);
  font-family:var(--mono);
}
.form__foot{display:flex;align-items:center;gap:18px;margin-top:22px;flex-wrap:wrap}
.form__hint{color:var(--dim);font-size:8.5px;line-height:1.5;max-width:22ch}
.form__hint.is-error{color:#ff8a7a}

/* ── footer ─────────────────────────────────────────────────── */
.foot{border-top:1px solid var(--line);padding:clamp(48px,7vw,90px) 0 30px;background:var(--void);overflow:hidden}
.foot__top{display:flex;justify-content:space-between;gap:40px;flex-wrap:wrap;align-items:flex-start}
.foot__brand{display:flex;gap:16px;align-items:flex-start}
.foot__mark{width:34px;color:var(--brass);flex:none;margin-top:6px}
.foot__word{font-size:clamp(2.4rem,5vw,3.6rem);line-height:.9;font-weight:600;letter-spacing:-.02em}
.foot__sub{color:var(--dim);margin-top:12px;font-size:9px;max-width:38ch;line-height:1.8}
.foot__nav{display:grid;grid-template-columns:repeat(2,minmax(110px,1fr));gap:8px 40px;padding-top:10px}
.foot__nav a{font-size:13px;color:var(--mute);transition:color .3s;width:fit-content}
.foot__nav a:hover{color:var(--brass)}
.foot__bottom{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-top:clamp(36px,5vw,64px);padding-top:20px;border-top:1px solid var(--line-soft);color:var(--dim);font-size:8.5px}
.foot__top-link{display:inline-flex;align-items:center;gap:8px;color:var(--mute)}
.foot__top-link:hover{color:var(--brass)}

/* ── lightbox ───────────────────────────────────────────────── */
.lb{position:fixed;inset:0;z-index:100;display:grid;place-items:center;padding:clamp(16px,4vw,48px);
  opacity:0;visibility:hidden;transition:opacity .5s var(--ease),visibility .5s}
.lb.is-open{opacity:1;visibility:visible}
.lb__backdrop{position:absolute;inset:0;background:rgba(3,4,7,.86);backdrop-filter:blur(10px)}
.lb__panel{position:relative;display:grid;grid-template-columns:1.35fr .65fr;width:min(1100px,100%);max-height:86vh;
  background:var(--ink);border:1px solid var(--line);transform:translateY(24px) scale(.98);transition:transform .6s var(--ease);overflow:hidden}
.lb.is-open .lb__panel{transform:none}
.lb__media{background:#0b0d13;overflow:hidden;display:flex;align-items:center;justify-content:center}
.lb__media img{width:100%;height:100%;max-height:86vh;object-fit:contain}
.lb__meta{padding:clamp(22px,3vw,40px);display:flex;flex-direction:column;gap:12px;justify-content:center}
.lb__meta .mono{color:var(--brass);font-size:9px}
.lb__meta h3{font-size:clamp(1.4rem,2.4vw,2.1rem);font-weight:500;letter-spacing:-.02em;line-height:1.1}
.lb__meta p{color:var(--mute);font-size:14px}
.lb__meta .btn{margin-top:14px;width:fit-content}
.lb__close{position:absolute;right:14px;top:12px;z-index:2;width:36px;height:36px;border-radius:50%;border:1px solid var(--line);
  display:grid;place-items:center;font-size:13px;color:var(--mute);transition:.3s;background:rgba(5,6,10,.6)}
.lb__close:hover{color:var(--bone);border-color:var(--bone)}
@media (max-width:760px){.lb__panel{grid-template-columns:1fr;max-height:88vh;overflow:auto}.lb__media{max-height:46vh}}

/* ── reveal system ──────────────────────────────────────────── */
[data-reveal]{opacity:0;transform:translateY(26px);transition:opacity .9s var(--ease),transform .9s var(--ease)}
[data-reveal].is-in{opacity:1;transform:none}
.no-js [data-reveal]{opacity:1;transform:none}

/* ── responsive ─────────────────────────────────────────────── */
@media (max-width:1100px){
  .origin__grid{grid-template-columns:1fr;gap:44px}
  .markets__grid{grid-template-columns:1fr}
  .markets__globe{order:-1;max-width:460px}
  .contact__grid{grid-template-columns:1fr}
  .grid{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr);gap:32px}
}
@media (max-width:860px){
  .cap{width:80vw}
  .rail__foot{padding-bottom:20px}
  .sec__head--row{flex-direction:column;align-items:flex-start}
  .sec__note{padding-bottom:0}
}
@media (max-width:700px){
  body{font-size:15px}
  .origin__stats{grid-template-columns:1fr 1fr;gap:24px}
  .founder{grid-template-columns:1fr;gap:24px}
  .founder__media{max-width:240px}
  .grid{grid-template-columns:1fr}
  .people{grid-template-columns:1fr}
  .form__row{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .values{grid-template-columns:1fr}
  .hero__hud{font-size:8.5px;letter-spacing:.14em}
  .marquee__track span{-webkit-text-stroke:1px rgba(234,230,221,.28)}
  .equation{gap:8px}
}

/* rail fallback: native horizontal scroll on small screens */
@media (max-width:860px){
  .rail{height:auto!important}
  .rail__sticky{position:relative;height:auto;padding-bottom:20px}
  .rail__viewport{overflow-x:auto;scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch;scrollbar-width:none}
  .rail__viewport::-webkit-scrollbar{display:none}
  .rail__track{height:auto;display:flex;gap:16px;padding:20px var(--pad);transform:none!important}
  .cap{width:78vw;scroll-snap-align:center;display:flex;flex-direction:column;border:1px solid var(--line-soft);padding:14px}
  .cap__media{aspect-ratio:4/3;flex:none}
  .rail__foot .rail__hint{display:none}
}

/* ── QA capture mode (?qa=1): freeze motion for screenshots ── */
.qa *,.qa *::before,.qa *::after{
  transition-duration:.001s!important;transition-delay:0s!important;
  animation-duration:.001s!important;animation-delay:0s!important;animation-iteration-count:1!important;
}
.qa .boot{display:none}
.qa .char,.qa .char-block{transform:none!important;opacity:1!important}

/* ── reduced motion ─────────────────────────────────────────── */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important;scroll-behavior:auto!important}
  [data-reveal]{opacity:1;transform:none}
  .char{transform:none;opacity:1}
  .hero__canvas,.hero__globe{display:none}
}